Rover 75 CDT, 2002 Randomly Cutting out

Hi , there! My car is randomly cutting out, at any speed. Then in few seconds later will start again and if'im lucky i can drive without any issues few days weeks or maybe less(Synergy 2 fitted on setting 9. It was on setting 10 but i turn-it down on 9)
So far i've done: HP seals replaced
injec. 2,3 & 4 reconditioned.
Crankshaft sensor replaced with a new original one,
ITP & UBP replaced both are working
fuel filter replaced
Maf is a Pierburg wich work with Synergy, i took it down and clean-it with a Cleaner spray.
What i saw for the last few days, around the nr, 1,& 2 Injector is very little diesel, i wipe-it out tightened down the two of 5 mm nuts but slowly slowly around the injector get again wet, not realy wet just a fine trace of diesel. I ordered a Injector seats cutter and i will try to recondition carefully all 4 injector seats.
Anyone out there with a new ideea, what elese can cause the engine cut out?

Thank's in advance!
Ros

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Rover 75 CDT, 2002 Randomly Cutting out